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Mirrors > Home > ILE Home > Th. List > fzo0dvdseq | GIF version |
Description: Zero is the only one of the first 𝐴 nonnegative integers that is divisible by 𝐴. (Contributed by Stefan O'Rear, 6-Sep-2015.) |
Ref | Expression |
---|---|
fzo0dvdseq | ⊢ (𝐵 ∈ (0..^𝐴) → (𝐴 ∥ 𝐵 ↔ 𝐵 = 0)) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | elfzolt2 10223 | . . . . . . 7 ⊢ (𝐵 ∈ (0..^𝐴) → 𝐵 < 𝐴) | |
2 | elfzoelz 10213 | . . . . . . . 8 ⊢ (𝐵 ∈ (0..^𝐴) → 𝐵 ∈ ℤ) | |
3 | elfzoel2 10212 | . . . . . . . 8 ⊢ (𝐵 ∈ (0..^𝐴) → 𝐴 ∈ ℤ) | |
4 | zltnle 9363 | . . . . . . . 8 ⊢ ((𝐵 ∈ ℤ ∧ 𝐴 ∈ ℤ) → (𝐵 < 𝐴 ↔ ¬ 𝐴 ≤ 𝐵)) | |
5 | 2, 3, 4 | syl2anc 411 | . . . . . . 7 ⊢ (𝐵 ∈ (0..^𝐴) → (𝐵 < 𝐴 ↔ ¬ 𝐴 ≤ 𝐵)) |
6 | 1, 5 | mpbid 147 | . . . . . 6 ⊢ (𝐵 ∈ (0..^𝐴) → ¬ 𝐴 ≤ 𝐵) |
7 | 6 | adantr 276 | . . . . 5 ⊢ ((𝐵 ∈ (0..^𝐴) ∧ 𝐴 ∥ 𝐵) → ¬ 𝐴 ≤ 𝐵) |
8 | 3 | adantr 276 | . . . . . . 7 ⊢ ((𝐵 ∈ (0..^𝐴) ∧ 𝐵 ≠ 0) → 𝐴 ∈ ℤ) |
9 | elfzonn0 10253 | . . . . . . . . . 10 ⊢ (𝐵 ∈ (0..^𝐴) → 𝐵 ∈ ℕ0) | |
10 | 9 | adantr 276 | . . . . . . . . 9 ⊢ ((𝐵 ∈ (0..^𝐴) ∧ 𝐵 ≠ 0) → 𝐵 ∈ ℕ0) |
11 | simpr 110 | . . . . . . . . 9 ⊢ ((𝐵 ∈ (0..^𝐴) ∧ 𝐵 ≠ 0) → 𝐵 ≠ 0) | |
12 | eldifsn 3745 | . . . . . . . . 9 ⊢ (𝐵 ∈ (ℕ0 ∖ {0}) ↔ (𝐵 ∈ ℕ0 ∧ 𝐵 ≠ 0)) | |
13 | 10, 11, 12 | sylanbrc 417 | . . . . . . . 8 ⊢ ((𝐵 ∈ (0..^𝐴) ∧ 𝐵 ≠ 0) → 𝐵 ∈ (ℕ0 ∖ {0})) |
14 | dfn2 9253 | . . . . . . . 8 ⊢ ℕ = (ℕ0 ∖ {0}) | |
15 | 13, 14 | eleqtrrdi 2287 | . . . . . . 7 ⊢ ((𝐵 ∈ (0..^𝐴) ∧ 𝐵 ≠ 0) → 𝐵 ∈ ℕ) |
16 | dvdsle 11986 | . . . . . . 7 ⊢ ((𝐴 ∈ ℤ ∧ 𝐵 ∈ ℕ) → (𝐴 ∥ 𝐵 → 𝐴 ≤ 𝐵)) | |
17 | 8, 15, 16 | syl2anc 411 | . . . . . 6 ⊢ ((𝐵 ∈ (0..^𝐴) ∧ 𝐵 ≠ 0) → (𝐴 ∥ 𝐵 → 𝐴 ≤ 𝐵)) |
18 | 17 | impancom 260 | . . . . 5 ⊢ ((𝐵 ∈ (0..^𝐴) ∧ 𝐴 ∥ 𝐵) → (𝐵 ≠ 0 → 𝐴 ≤ 𝐵)) |
19 | 7, 18 | mtod 664 | . . . 4 ⊢ ((𝐵 ∈ (0..^𝐴) ∧ 𝐴 ∥ 𝐵) → ¬ 𝐵 ≠ 0) |
20 | 0z 9328 | . . . . . . . 8 ⊢ 0 ∈ ℤ | |
21 | zdceq 9392 | . . . . . . . 8 ⊢ ((𝐵 ∈ ℤ ∧ 0 ∈ ℤ) → DECID 𝐵 = 0) | |
22 | 20, 21 | mpan2 425 | . . . . . . 7 ⊢ (𝐵 ∈ ℤ → DECID 𝐵 = 0) |
23 | nnedc 2369 | . . . . . . 7 ⊢ (DECID 𝐵 = 0 → (¬ 𝐵 ≠ 0 ↔ 𝐵 = 0)) | |
24 | 22, 23 | syl 14 | . . . . . 6 ⊢ (𝐵 ∈ ℤ → (¬ 𝐵 ≠ 0 ↔ 𝐵 = 0)) |
25 | 2, 24 | syl 14 | . . . . 5 ⊢ (𝐵 ∈ (0..^𝐴) → (¬ 𝐵 ≠ 0 ↔ 𝐵 = 0)) |
26 | 25 | adantr 276 | . . . 4 ⊢ ((𝐵 ∈ (0..^𝐴) ∧ 𝐴 ∥ 𝐵) → (¬ 𝐵 ≠ 0 ↔ 𝐵 = 0)) |
27 | 19, 26 | mpbid 147 | . . 3 ⊢ ((𝐵 ∈ (0..^𝐴) ∧ 𝐴 ∥ 𝐵) → 𝐵 = 0) |
28 | 27 | ex 115 | . 2 ⊢ (𝐵 ∈ (0..^𝐴) → (𝐴 ∥ 𝐵 → 𝐵 = 0)) |
29 | dvds0 11949 | . . . 4 ⊢ (𝐴 ∈ ℤ → 𝐴 ∥ 0) | |
30 | 3, 29 | syl 14 | . . 3 ⊢ (𝐵 ∈ (0..^𝐴) → 𝐴 ∥ 0) |
31 | breq2 4033 | . . 3 ⊢ (𝐵 = 0 → (𝐴 ∥ 𝐵 ↔ 𝐴 ∥ 0)) | |
32 | 30, 31 | syl5ibrcom 157 | . 2 ⊢ (𝐵 ∈ (0..^𝐴) → (𝐵 = 0 → 𝐴 ∥ 𝐵)) |
33 | 28, 32 | impbid 129 | 1 ⊢ (𝐵 ∈ (0..^𝐴) → (𝐴 ∥ 𝐵 ↔ 𝐵 = 0)) |
Colors of variables: wff set class |
Syntax hints: ¬ wn 3 → wi 4 ∧ wa 104 ↔ wb 105 DECID wdc 835 = wceq 1364 ∈ wcel 2164 ≠ wne 2364 ∖ cdif 3150 {csn 3618 class class class wbr 4029 (class class class)co 5918 0cc0 7872 < clt 8054 ≤ cle 8055 ℕcn 8982 ℕ0cn0 9240 ℤcz 9317 ..^cfzo 10208 ∥ cdvds 11930 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 615 ax-in2 616 ax-io 710 ax-5 1458 ax-7 1459 ax-gen 1460 ax-ie1 1504 ax-ie2 1505 ax-8 1515 ax-10 1516 ax-11 1517 ax-i12 1518 ax-bndl 1520 ax-4 1521 ax-17 1537 ax-i9 1541 ax-ial 1545 ax-i5r 1546 ax-13 2166 ax-14 2167 ax-ext 2175 ax-sep 4147 ax-pow 4203 ax-pr 4238 ax-un 4464 ax-setind 4569 ax-cnex 7963 ax-resscn 7964 ax-1cn 7965 ax-1re 7966 ax-icn 7967 ax-addcl 7968 ax-addrcl 7969 ax-mulcl 7970 ax-mulrcl 7971 ax-addcom 7972 ax-mulcom 7973 ax-addass 7974 ax-mulass 7975 ax-distr 7976 ax-i2m1 7977 ax-0lt1 7978 ax-1rid 7979 ax-0id 7980 ax-rnegex 7981 ax-precex 7982 ax-cnre 7983 ax-pre-ltirr 7984 ax-pre-ltwlin 7985 ax-pre-lttrn 7986 ax-pre-apti 7987 ax-pre-ltadd 7988 ax-pre-mulgt0 7989 ax-pre-mulext 7990 |
This theorem depends on definitions: df-bi 117 df-dc 836 df-3or 981 df-3an 982 df-tru 1367 df-fal 1370 df-nf 1472 df-sb 1774 df-eu 2045 df-mo 2046 df-clab 2180 df-cleq 2186 df-clel 2189 df-nfc 2325 df-ne 2365 df-nel 2460 df-ral 2477 df-rex 2478 df-reu 2479 df-rmo 2480 df-rab 2481 df-v 2762 df-sbc 2986 df-csb 3081 df-dif 3155 df-un 3157 df-in 3159 df-ss 3166 df-nul 3447 df-pw 3603 df-sn 3624 df-pr 3625 df-op 3627 df-uni 3836 df-int 3871 df-iun 3914 df-br 4030 df-opab 4091 df-mpt 4092 df-id 4324 df-po 4327 df-iso 4328 df-xp 4665 df-rel 4666 df-cnv 4667 df-co 4668 df-dm 4669 df-rn 4670 df-res 4671 df-ima 4672 df-iota 5215 df-fun 5256 df-fn 5257 df-f 5258 df-fv 5262 df-riota 5873 df-ov 5921 df-oprab 5922 df-mpo 5923 df-1st 6193 df-2nd 6194 df-pnf 8056 df-mnf 8057 df-xr 8058 df-ltxr 8059 df-le 8060 df-sub 8192 df-neg 8193 df-reap 8594 df-ap 8601 df-div 8692 df-inn 8983 df-n0 9241 df-z 9318 df-uz 9593 df-q 9685 df-fz 10075 df-fzo 10209 df-dvds 11931 |
This theorem is referenced by: fzocongeq 12000 |
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